Another excellent resource from well-respected author George Booker The crux of this publication is that “To overcome the difficulties that students have, teachers need to be able to pinpoint weaknesses early and provide intervention…” (p4) The author meticulously details the number ideas underpinning numeracy: numeration, computation, fraction ideas and making connections. Key examples of mathematical misconceptions and inappropriate ways of thinking are shown and discussed. Explanations of the analysis of evidence gathered from screening tests are given, leading teachers towards the diagnosis of difficulties and then effective intervention. A series of numeracy screening tests are provided to allow teachers to assess the strengths and weaknesses of a class, a small group or individuals. A CD-ROM containing professional support resources (instructional videos, PowerPoint animations, and tests with allied spreadsheet records) is also included.